EP0322594B1 - Pompe avec organe tubulaire - Google Patents

Pompe avec organe tubulaire Download PDF

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Publication number
EP0322594B1
EP0322594B1 EP88120116A EP88120116A EP0322594B1 EP 0322594 B1 EP0322594 B1 EP 0322594B1 EP 88120116 A EP88120116 A EP 88120116A EP 88120116 A EP88120116 A EP 88120116A EP 0322594 B1 EP0322594 B1 EP 0322594B1
Authority
EP
European Patent Office
Prior art keywords
hose
squeezing
plate
unit
pump according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88120116A
Other languages
German (de)
English (en)
Other versions
EP0322594A1 (fr
Inventor
Wolfgang Suttner
Walter Olbrisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suttner GmbH and Co KG
Original Assignee
Suttner GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suttner GmbH and Co KG filed Critical Suttner GmbH and Co KG
Priority to AT88120116T priority Critical patent/ATE52310T1/de
Publication of EP0322594A1 publication Critical patent/EP0322594A1/fr
Application granted granted Critical
Publication of EP0322594B1 publication Critical patent/EP0322594B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/09—Pumps having electric drive

Definitions

  • the invention relates to a hose pump according to the preamble of claim 1.
  • Peristaltic pumps are used for dosing devices in water treatment plants, as laboratory pumps for conveying small quantities of a medium to be pumped, but also for dosing purposes in the medical field. In some cases, the peristaltic pumps are also operated quasi-continuously, i.e. used as pure feed pumps.
  • the medium to be pumped is usually a liquid, for example water mixed with chemicals, a chemical solution, etc. in a water treatment plant.
  • a known peristaltic pump (LUEGER “LEXIKON DER TECHNIK”, volume 7, “LEXIKON DER ENERGIETECHNIK UND KRAFTMASCHI-NEN”, DVA, Stuttgart, 1965, page 264) has a pump body with a circular interior, the inner wall of which represents an abutment wall for a hose .
  • the hose is guided from an inlet in a circular arc to an outlet of the pump body.
  • In the center of the pump body is the output shaft of a rotary drive, usually an electric motor, on which a rotating disc sits.
  • peristaltic pumps On this disc there are planetary rollers that are pressed by spring force against the hose made of elastic material that runs around the abutment wall and compress them at regular intervals so that the hose volume between two rollers is separated from the suction side and conveyed to the pressure side.
  • peristaltic pumps are known with two, three or even four rotating rollers.
  • the pumping effect is achieved by an eccentrically mounted roller piston, which rolls around inside the pump body and thereby presses a ring made of elastic material against the abutment wall.
  • the drive is necessarily a rotary drive, usually an electric motor.
  • the delivery rate of the known peristaltic pumps must be adjustable, especially when they are used in metering devices. This requires the speed of the driving electric motor to be adjustable. This in turn requires a relatively expensive control electronics. Overall, the known peristaltic pumps are relatively expensive on the one hand because of the need for an electric motor as a drive, and on the other hand because of the need for electronic speed control.
  • a peristaltic pump which is more expedient for control purposes is known (US Pat. No. 3,171,360), in which the hose is essentially stationary between an abutment wall and a squeeze plate and the drive is designed as an actuating magnet and generates a linear drive movement. Due to the special shape of the abutment wall and the squeeze plate, a flow direction in the hose is predetermined. According to the arrangement of the hose in this hose pump, the construction is relatively large and complex, and the delivery rate cannot be metered very well here. A similar pump is also shown in DE-A 2 430 450. Greater dosing accuracy requires a plurality of linearly operating drives, which is very expensive (GB-A 2 020 735 and Patent Abstracts of Japan, Volume 9, No. 172 (M- 397) (1895), July 17, 1985 regarding JP-A P 6 043 188).
  • the object of the invention is to simplify the construction of the above-described pump with a stationary hose in such a way that, provided that the metering accuracy is comparable, it is considerably less expensive than the previously known hose pumps.
  • the kinking of the hose provided according to the invention which has the function of the first squeeze element, is preceded by a stationary second squeeze element which closes in such a way that it guarantees the completion of the hose required to build up the required liquid pressure in the area between the abutment wall and the squeeze plate.
  • the liquid can be conveyed through the hose past the first squeeze element, since the pressure in the area between the abutment wall and the squeeze plate causes the hose to inflate somewhat at the kink and releases a liquid passage. Since the pressure in the hose between the abutment wall and the squeeze plate immediately drops when the second pumping points are reached, the valve formed by the kinking on the first squeeze element closes again immediately.
  • the squeeze plate When the squeeze plate is lifted again from the abutment wall and returns to the first pump position, the hose is relieved and, after opening the second squeeze element, it expands under its own tension and / or under the pressure of the liquid at the inlet of the hose and fills with liquid. The pump cycle can then run again.
  • the hose pump according to the invention is far cheaper to produce than known hose pumps, but the metering accuracy is comparatively high or even higher and is in the order of magnitude of the metering accuracy of hose pumps with several linear drives.
  • a peristaltic pump according to the invention shown in the figures of the drawing is intended and suitable in particular for metering devices in water treatment systems.
  • a peristaltic pump could also be used for medical applications, for example as an infusion metering pump; with a correspondingly high drive frequency, this peristaltic pump could also be used as a quasi-continuous pump with a remarkable delivery rate.
  • the hose pump shown initially has a pump body 1 and a hose 2 which is guided closed by the pump body 1.
  • the hose 2 bears against an abutment wall 3 of the pump body 1 and guides the medium to be pumped in a closed pass, in particular this medium will be a liquid, for example water mixed with chemicals.
  • Squeezing elements 4, 5 which squeeze the hose 2 are provided at at least two points.
  • the squeezing elements 4, 5 are driven or moved by a drive 6.
  • By opening and closing the squeezing elements 4, 5 in a certain sequence a certain volume of the medium to be pumped, in particular the liquid, can be conveyed through the hose, that is from the inlet 7 to the outlet 8.
  • the hose 2 is essentially stationary between the abutment wall 3 and a squeeze plate 9 and by as First squeezing element 4 serving end of the squeezing plate 9 is bent sharply with a bend of approximately 180 ° and is thereby squeezed out.
  • the first pinch point is thus realized by this kink at the end of the squeeze plate 9.
  • the second squeeze element 5 is arranged opposite the abutment wall 3.
  • the squeeze plate 9 and the second squeeze element 5 arranged thereon are driven by the drive 6 between a first pump position I, shown in FIG. 1, at a greater distance from the abutment wall 3 and a second pump position 11, shown in FIG. 2, at a small distance from the abutment wall 3 movable back and forth.
  • This reciprocating movement in contrast to the rotational movement of the squeeze elements realized in the prior art, is referred to below as the pump movement.
  • the hose 2 In the first pumping position I, the hose 2 is essentially relaxed, that is to say it has its normal volume in the region between the abutment wall 3 and the squeeze plate 9.
  • the second squeeze element 5 does not squeeze the hose 2 in the pumping position I, so that liquid can enter from the inlet 7 into the area between the abutment wall 3 and the squeeze plate 9.
  • the second squeeze element 5 On the way from the first pump position to the second pump position 11, the second squeeze element 5 first squeezes the hose 2, so that liquid in the area between the abutment wall 3 and the squeeze plate 9 cannot flow back to the inlet 7. Then, in the further course of the movement in the direction of the second pumping position II, the squeeze plate 9 then squeezes the hose 2 against the abutment wall 3.
  • the liquid pressure generated in the hose 2 between the abutment wall 3 and the squeeze plate 9 is sufficient to open the hose 2 a little at the kink and to push the liquid through it.
  • the liquid thus exits completely from the area of the hose 2 between the abutment wall 3 and the squeeze plate 9 until the pumping position II is reached in the area of the hose 2 beyond the first squeeze element 4.
  • the pump play described above is repeated at the drive frequency of the drive 6 and thus leads to the desired pumping action.
  • the first squeezing element 4 is followed by a third squeezing element 10 and the third squeezing element 10, in cooperation with an abutment 11, squeezes the hose 2 in the first pumping position I and the hose in the second pumping position 11 2 not squeezed.
  • This third squeezing element 10 in connection with the abutment 11 serves for additional security.
  • the squeeze elements 5 and 10 are designed as simple squeeze edges, for example on a correspondingly bent metal strip
  • the abutment 11 is a plate, also designed as a stable metal strip.
  • Other embodiments are of course conceivable. In any case, it must be ensured that the hose 2 is not damaged by the squeezing even during continuous operation.
  • the pump movement of the squeeze plate and the second squeeze element can be a linear movement.
  • the pumping movement is a swiveling movement.
  • the pivoting movement in the exemplary embodiment shown here has the advantage that the second squeezing element 5 carries out the squeezing of the hose 2 earlier than the squeezing plate 9 simply by its geometrical arrangement in the direction of movement “in front” of the squeezing plate 9 and closer to the swiveling axis Squeeze element 5 thus protrudes relative to squeeze plate 9 in the direction of abutment wall 3.
  • a drive 6 with a linear drive movement can be used here.
  • a drive which causes a rotating drive movement
  • a linear drive movement can of course be generated from a rotating drive movement at any time via a crank drive.
  • a linear drive movement may have considerable advantages in terms of costs for the construction of a drive 6. This applies in particular when the drive 6 is designed as an actuating magnet 12, as is the case in the exemplary embodiment shown here.
  • An actuating magnet consists of a magnetic body 13 and an armature 14, via which the mechanical force of an electromagnetic field is used to carry out a specific longitudinal or rotational movement.
  • actuating magnets The main types of actuating magnets are lifting magnets, rotary magnets and vibrating magnets.
  • DC-operated and AC-operated actuating magnets which differ in terms of their mechanical structure and switching times.
  • the drive frequency of the drive 6, when it is designed as an actuating magnet 12, is referred to as the play frequency (LUEGER "LEXIKON DER TECHNIK", Volume 13, “LEXIKON DER FEINWERKTECHNIK", page 86, 87).
  • the actuating magnet 12 is designed as a lifting magnet, which represents a particularly inexpensive solution which is optimal here in terms of the force effect.
  • the squeeze plate 9 and the second squeeze element 5 are attached to the armature 14 of the actuating magnet 12.
  • the armature 14 could perform a linear movement, but in the exemplary embodiment shown here the armature 14 performs a pivoting movement.
  • the armature 14 of the actuating magnet 12 is designed in the manner of a cantilever and is mounted laterally on the magnet body 13 so as to be pivotable about a pivot axis 16. This can be seen particularly clearly from the rear view in FIG. 3.
  • the drawing shows a hose pump according to the invention, which is of extremely simple construction, in particular no longer requires a rotary drive, but requires a simple actuating magnet as the drive and is therefore extremely cost-effective. Compared to previously known peristaltic pumps, the costs here are reduced by 60 to 80%.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Claims (11)

1. Pompe tubulaire, notamment pour des dispositifs de dosage dans des installations de traitement des eaux, comportant un corps de pompe (1), un tuyau fermé (2) guidé à travers le corps de pompe et appliqué contre une paroi de butée (3) du corps de pompe (1) et prévue pour le milieu à pomper, notamment un liquide, des éléments de pincement (4, 5) appliquant une action de pincement au moins en deux endroits, et un dispositif d'entraînement (6) servant à déplacer les éléments de pincement (4, 5), et dans lequel un volume déterminé du liquide peut être entraîné par ouverture et fermeture des éléments de pincement (4, 5) selon un séquence déterminée, et le tuyau (2) est situé, en étant sensiblement fixe, entre la paroi de butée (3) et une plaque de pincement (9), caractérisée en ce que le tuyau (2) est replié de façon serrée, conformément à un pliage à environ 180°, autour d'une extrémité, qui sert de premier élément de pincement (4), de la plaque (9) et de ce fait est pincé, qu'au niveau de l'autre extrémité de la plaque de pincement (9) la paroi de butée (3) est disposée en vis-à-vis du second élément de pincement (5), que la plaque de pincement (9) et le second élément de pincement (5) peuvent être déplacés en va-et-vient par le dispositif d'entraînement (6) entre une première position de pompage (I) située à une distance assez importante de la paroi de butée (3), et une seconde position de pompage (II) située à une faible distance de la paroi de butée (3), et que, dans la première position de pompage (I), le tuyau (2) est sensiblement détendu et le second élément de pincement (5) ne pince plus le tuyau (2), et que, sur la course de déplacement depuis la première position de pompage (I) vers la seconde position de pompage (II), tout d'abord le second élément de pincement (5), puis la plaque de pincement (9) compriment le tuyau contre la paroi de butée (3).
2. Pompe tubulaire selon la revendication 1, caractérisée en ce qu'un troisième élément de pincement (10) est située en aval du premier élément de pincement (4) et qu'en coopération avec une butée (11), le troisième élément de pincement (10) pince le tuyau (2), dans la première position de pompage (I) et ne pince pas le tuyau (2) dans la seconde position de pompage (II).
3. Pompe tubulaire selon la revendication 1 ou 2, caractérisée en ce que le mouvement de pompage produit par la plaque de pincement (9) et le second élément de pincement (5) est un déplacement linéaire.
4. Pompe tubulaire selon la revendication 1 ou 2, caractérisée en ce que le mouvement de pompage produit par la plaque de pincement (9) et le second élément de pincement (5) est un mouvement de pivotement.
5. Pompe tubulaire selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le second élément de pincement (5) fait saillie par rapport à la plaque de pincement (9) en direction de la paroi de butée (3).
6. Pompe tubulaire selon la revendication 5, caractérisée en ce que le second élément de pincement (5) peut être repoussé à l'encontre d'une force de rappel suffisante pour pincer le tuyau (2), par rapport à la plaque die pincement (9).
7. Pompe tubulaire selon l'une quelconque des revendications 1 à 6, caractérisée en ce que le dispositif d'entraînement (6) produit un mouvement d'entraînement linéaire.
8. Pompe tubulaire selon la revendication 7, caractérisée en ce que le dispositif d'entraînement (6) est agencé sous la forme d'un aimant d'actionnement (12), notamment sous la forme d'un aimant de levage, et que la plaque de pincement (9) équipée du second élément de pincement (5) est montée sur l'armature (14) de l'aimant d'actionnement (12).
9. Pompe tubulaire selon la revendication 4, en liaison avec la revendication 8, caractérisée en ce que l'armature (14) de l'aimant d'actionnement (12) est agencée sous la forme d'un bras en console et est montée latéralemetn sur le corps (13) de l'aimant de manière à pouvoir pivoter autour d'un axe de pivotement (16).
10. Pompe tubulaire selon l'une quelconque des revendications 1 à 9, caractérisée en ce qu'un guide (17) pour le tuyau est disposé sur la plaque de pincement (9) à proximité de l'extrémité formant le premier élément de pincement (4), sur le bord et/ou sur le côté tourné à l'opposé de la paroi de butée (3), et que le tuyau (2) est guidé entre son guide (17) et la plaque de pincement (9).
EP88120116A 1987-12-05 1988-12-02 Pompe avec organe tubulaire Expired - Lifetime EP0322594B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88120116T ATE52310T1 (de) 1987-12-05 1988-12-02 Schlauchpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873741262 DE3741262A1 (de) 1987-12-05 1987-12-05 Schlauchpumpe
DE3741262 1987-12-05

Publications (2)

Publication Number Publication Date
EP0322594A1 EP0322594A1 (fr) 1989-07-05
EP0322594B1 true EP0322594B1 (fr) 1990-04-25

Family

ID=6341951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120116A Expired - Lifetime EP0322594B1 (fr) 1987-12-05 1988-12-02 Pompe avec organe tubulaire

Country Status (4)

Country Link
US (1) US4948350A (fr)
EP (1) EP0322594B1 (fr)
AT (1) ATE52310T1 (fr)
DE (2) DE3741262A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3741262A1 (de) * 1987-12-05 1989-06-22 Suttner Gmbh & Co Kg Schlauchpumpe
CN100436819C (zh) * 2003-08-25 2008-11-26 精工爱普生株式会社 管泵
US7481337B2 (en) * 2004-04-26 2009-01-27 Georgia Tech Research Corporation Apparatus for fluid storage and delivery at a substantially constant pressure

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2816514A (en) * 1954-09-17 1957-12-17 Designers For Industry Inc Vibratory pump
US3171360A (en) * 1962-03-09 1965-03-02 Walton William Melin Pulsation type pumps
US3182602A (en) * 1963-09-16 1965-05-11 William B Price Method of and apparatus for pumping
US3170360A (en) * 1963-10-21 1965-02-23 Miettinen Toivo Musical clapping instruments
DE1240741B (de) * 1964-01-30 1967-05-18 Fuchs Martin Metallwaren Schlauchpumpe, insbesondere fuer Spielzeuge
US3418940A (en) * 1966-11-18 1968-12-31 Union Carbide Corp Fluid material transfer apparatus
US3518033A (en) * 1969-08-22 1970-06-30 Robert M Anderson Extracorporeal heart
US4015914A (en) * 1972-05-18 1977-04-05 Delta Scientific Corporation Metering pump wherein tubular pump is responsive to force impulses
US3778195A (en) * 1972-07-20 1973-12-11 G Bamberg Pump for parenteral injections and the like
DE2430450A1 (de) * 1974-06-25 1976-01-22 Mueller Robert Kg Einem reaktionsgefaess, einer mischoder verarbeitungsmaschine o.dgl. zugeordnetes dosiergeraet fuer einen fluessigen oder pastenfoermigen zuschlagstoff
DE2820281A1 (de) * 1978-05-10 1979-11-15 Fresenius Chem Pharm Ind Schlauchpumpe mit hoher dosiergenauigkeit
FI70473C (fi) * 1978-06-23 1986-09-19 Inst Biologicheskoi Fiz Peristaltisk doserare och medelst denna foerverkligat doseringssystem
JPS587253A (ja) * 1981-07-04 1983-01-17 テルモ株式会社 薬液注入装置
JPS5993979A (ja) * 1982-11-18 1984-05-30 Sharp Corp チユ−ブ型定量ポンプ
US4501405A (en) * 1983-06-21 1985-02-26 Bunnell Life Systems, Inc. Frictionless valve/pump
JPS6043188A (ja) * 1983-08-19 1985-03-07 Hitachi Ltd 液体吐出装置
DE3741262A1 (de) * 1987-12-05 1989-06-22 Suttner Gmbh & Co Kg Schlauchpumpe

Also Published As

Publication number Publication date
US4948350A (en) 1990-08-14
ATE52310T1 (de) 1990-05-15
DE3860107D1 (de) 1990-05-31
DE3741262C2 (fr) 1989-09-21
EP0322594A1 (fr) 1989-07-05
DE3741262A1 (de) 1989-06-22

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